Price of black plastic trim on door

[x5GuyInLA]

Apparently my neighbor doesn't realize that although that piece is there to protect my door from idiots like him, it doesn't give him the right to open his door into my car. Once is understandable, but he's hit it 3x. He's either a complete idiot or just doesn't care, in which case, I hope karma comes biting him in the ass. Can't do anything back to his car since it's a POS 1970s oldsmobile station wagon; anything I do probably would add value. Ok, enough ranting...Does anyone know how much it would cost to replace the black plastic trim that protects the door? I'll eventually have to replace it or get it fixed if the jackass keeps doing it after I talk to him. Parts depts. are closed right and this is eating at me.